JPS6437623A - Data processor - Google Patents
Data processorInfo
- Publication number
- JPS6437623A JPS6437623A JP19395587A JP19395587A JPS6437623A JP S6437623 A JPS6437623 A JP S6437623A JP 19395587 A JP19395587 A JP 19395587A JP 19395587 A JP19395587 A JP 19395587A JP S6437623 A JPS6437623 A JP S6437623A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- address
- mode
- goes
- register direct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To form entry addresses for different microinstructions in case of a specific addressing mode and other modes by modifying the entry address of a microinstruction at the time of the specific addressing mode. CONSTITUTION:The entry address of a microinstruction corresponding to a machine instruction is formed by an instruction decoder 21. When the addressing mode is a register direct mode, a register direct mode signal (b) is '1' and a selection signal (d) is '0', so that a register direct mode signal (e) outputted from a multiplexer 24 goes to '1'. Since a control signal (f) is '1', an address modification signal (g) goes to '1' and an entry address (a) is modified by an address modification circuit 26. When the addressing mode is no the register direct mode, the signal (b) goes to '0' and address modification is not executed.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193955A JPH0795268B2 (en) | 1987-08-03 | 1987-08-03 | Data processing device |
US07/642,169 US5123096A (en) | 1987-08-03 | 1991-01-17 | Data processor with addressing mode decoding function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193955A JPH0795268B2 (en) | 1987-08-03 | 1987-08-03 | Data processing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6437623A true JPS6437623A (en) | 1989-02-08 |
JPH0795268B2 JPH0795268B2 (en) | 1995-10-11 |
Family
ID=16316538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62193955A Expired - Fee Related JPH0795268B2 (en) | 1987-08-03 | 1987-08-03 | Data processing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0795268B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02205925A (en) * | 1989-02-03 | 1990-08-15 | Nec Corp | Microprocessor |
JPH0415348A (en) * | 1990-05-08 | 1992-01-20 | Bridgestone Cycle Co | Frictional type continuously variable transmission |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6049935A (en) * | 1983-08-30 | 1985-03-19 | 日本モニエル株式会社 | Manufacture of colored cement tile |
-
1987
- 1987-08-03 JP JP62193955A patent/JPH0795268B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6049935A (en) * | 1983-08-30 | 1985-03-19 | 日本モニエル株式会社 | Manufacture of colored cement tile |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02205925A (en) * | 1989-02-03 | 1990-08-15 | Nec Corp | Microprocessor |
JPH0415348A (en) * | 1990-05-08 | 1992-01-20 | Bridgestone Cycle Co | Frictional type continuously variable transmission |
Also Published As
Publication number | Publication date |
---|---|
JPH0795268B2 (en) | 1995-10-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |